Subtract 9/28 from 6/30, Solve 6/30

Subtract 9/28 from 6/30

6/30 - 9/28 is -17/140.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 28 is 420

Next, find the equivalent fraction of both fractional numbers with denominator 420
For the 1st fraction, since 30 × 14 = 420,
6/30 = 6 × 14/30 × 14 = 84/420
Likewise, for the 2nd fraction, since 28 × 15 = 420,
9/28 = 9 × 15/28 × 15 = 135/420
Subtract the two like fractions:
84/420 - 135/420 = 84 - 135/420 = -51/420
After reducing the fraction, the answer is -17/140

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